Population
Service age groups
About this topic
Service age groups divide the population into broad life-stage bands such as children, young adults, working-age adults, and older people. The groupings are designed to reflect typical demand for age-based services and facilities rather than exact five-year cohorts.
This view is useful for planning childcare, schools, recreation, aged services, and other community infrastructure. It works best alongside five year age groups, household type, and dwelling data, which add more detail about who is living in an area and how needs may change over time.
Interpretation notes
- This is a derived grouping rather than a direct Census question, so the age bands are planning-oriented summaries built from standard age data.
- Percentages relate to the total population; use five year age groups when exact cohort detail matters.
Related topics
Key insight
In 2021, Parents and homebuilders (35 to 49) was the most common category among residents in East Pilbara (S), accounting for 28.6% (2,789 people). This share was higher than Regional WA (19.9%). Since 2016, the biggest change was in Young workforce (25 to 34), which decreased by 606 people and 3.9 percentage points.
Section overview
Age structure - Service age groups
East Pilbara (S) - Total persons (Usual residence)
This table summarises service age groups for East Pilbara (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for East Pilbara (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
561
% of total
5.7%
Change from 2016
+0.1pp
561
5.7%
+0.1pp
Primary schoolers (5 to 11)
2021 count
765
% of total
7.8%
Change from 2016
+0.8pp
765
7.8%
+0.8pp
Secondary schoolers (12 to 17)
2021 count
481
% of total
4.9%
Change from 2016
+0.5pp
481
4.9%
+0.5pp
Tertiary education and independence (18 to 24)
2021 count
825
% of total
8.5%
Change from 2016
+1.1pp
825
8.5%
+1.1pp
Young workforce (25 to 34)
2021 count
2,327
% of total
23.8%
Change from 2016
-3.9pp
2,327
23.8%
-3.9pp
Parents and homebuilders (35 to 49)
2021 count
2,789
% of total
28.6%
Change from 2016
-0.4pp
2,789
28.6%
-0.4pp
Older workers and pre-retirees (50 to 59)
2021 count
1,308
% of total
13.4%
Change from 2016
+0.1pp
1,308
13.4%
+0.1pp
Empty nesters and retirees (60 to 69)
2021 count
601
% of total
6.2%
Change from 2016
+1.6pp
601
6.2%
+1.6pp
Seniors (70 to 84)
2021 count
115
% of total
1.2%
Change from 2016
+0.4pp
115
1.2%
+0.4pp
Elderly aged (85 and over)
2021 count
5
% of total
0.1%
Change from 2016
+0.1pp
5
0.1%
+0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-37
+0.1pp
Primary schoolers (5 to 11)
+19
+0.8pp
Secondary schoolers (12 to 17)
+15
+0.5pp
Tertiary education and independence (18 to 24)
+39
+1.1pp
Young workforce (25 to 34)
-606
-3.9pp
Parents and homebuilders (35 to 49)
-285
-0.4pp
Older workers and pre-retirees (50 to 59)
-101
+0.1pp
Empty nesters and retirees (60 to 69)
+119
+1.6pp
Seniors (70 to 84)
+26
+0.4pp
Elderly aged (85 and over)
+2
+0.1pp
Data table
Service age groups for East Pilbara (S). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 561 | 5.7% | 6.0% | 598 | 5.6% | 6.6% | -37 | +0.1pp |
| Primary schoolers (5 to 11) | 765 | 7.8% | 9.5% | 746 | 7.0% | 9.8% | +19 | +0.8pp |
| Secondary schoolers (12 to 17) | 481 | 4.9% | 7.6% | 466 | 4.4% | 7.4% | +15 | +0.5pp |
| Tertiary education and independence (18 to 24) | 825 | 8.5% | 6.7% | 786 | 7.4% | 7.0% | +39 | +1.1pp |
| Young workforce (25 to 34) | 2,327 | 23.8% | 12.5% | 2,933 | 27.7% | 13.6% | -606 | -3.9pp |
| Parents and homebuilders (35 to 49) | 2,789 | 28.6% | 19.9% | 3,074 | 29.0% | 20.8% | -285 | -0.4pp |
| Older workers and pre-retirees (50 to 59) | 1,308 | 13.4% | 13.7% | 1,409 | 13.3% | 14.1% | -101 | +0.1pp |
| Empty nesters and retirees (60 to 69) | 601 | 6.2% | 12.4% | 482 | 4.6% | 11.3% | +119 | +1.6pp |
| Seniors (70 to 84) | 115 | 1.2% | 10.1% | 89 | 0.8% | 7.8% | +26 | +0.4pp |
| Elderly aged (85 and over) | 5 | 0.1% | 1.7% | 3 | 0.0% | 1.5% | +2 | +0.1pp |
| Total | 9,760 | 100.0% | 100.0% | 10,591 | 100.0% | 100.0% | -831 | 0.0pp |